GeoBoy wrote:
If your 2007 is the old style, the roof flexing happens when the drivers window is down. If you have a extended or crew cab you can eliminate the flexing by opening the rear windows. The newer GM’s have reinforcing ribs to stop the flexing.
Thanks, your absolutely correct, I only hear it with the drivers window down, apparently the cab slightly holds pressure and keeps the cab from flexing. I'll try the opening of the rear window next trip.
Also the Airtab thing is interesting.
Maybe I can rig up a drywall ceiling support, that might do it. :R